Improvement in drains



UNITED A STATES PATENT OFFICE.

GEORGE W. SMITH, OE SPRINGFIELD, BURLINGTON COUNTY, NEW JERSEY.

IMPROVEMENT IN DRAINS.

Specification forming part of Letters Patent No. 41,542, laied February 9, 1964.

To all whom @t may concern Beit known that I, GEORGE W. SMITH, of Springfield township, Burlington county, State of New Jersey, have invented a new and useful Improvement in the Construction of Drains .for Agricultural and other Purposes; and I do hereby declare the following to be a full and exact description ot' the same, reference being had to the annexed drawings, making a part of this specification, in which- Fignre l represents a view of the detached pieces or slabs, and Fig. 2 the drain-pieces put together, Fig. 3, the mode of laying the drain. l

I manufacture my improved drain by forming drain-pieces or slabs out of slate or tile ot at plates like A With grooves C C near each edge of the plate on the upper side. Into these grooves two pieces, B and D, are inserted and inclined so as to support each other, as shown in Fig. 2. The Weight of the pieces B and D alone, or with the' incumbent earth, secures themin theirplace permanently,

The combination of the bottom drain-plates or slabs A with the grooves C C and the two inclined plates or slabs B D, constructed and put together substantially as described.

GEORGE W. SMITH. Witnesses:

CEAS. B. HELEENSTEIN, J AMES MGGAHEN. 

